Snap switch



eevnivv ovvio@ Application @leo anni infinie of New York, have invented new :Uf iseifnl improvement in Snap i wielzes, of xviii-cli the following; is a specifiee'ion. y

y invention i'eieres io eleeiie snno l and ii'. lic-s i'oies object the pro i 'on oi n. eonslrnction ,vliei'eby e posiive szii'ing move-mens may lie impsed io lie siviicli blades and. line inftxvemeni thereof lien conn" l by spring.

i i', sometimes lieppens le Blades silo-lf slightly in one o ille enireme positions and will noir move iesclye under ine tension alone. To over come lii objeoion, l". provide a. simple ineens 'whereby movement oi i:lie switch l'mmile. by the operatora in addition to cresiing 'ing tension, also impeits positive siei'ir movement to the swieli blades. A orni of device embodying rcliis feature is slio'vvn in die secompenying drawing, Wlaeeinw Figure l is e plan View of e switch e nolymg my invenion;

2 is an elevational view, wiin a pov iion of ytlie switch freine removed; and

8 'is sii-elevational view miie-n at sigilli: angles io that oi Fig. 1'.

My invention is shown esvappliedlo e swieli of the oscillating type having the usuel :base 3, tvv'o pairs of Contact members ai snel e svvitcli frs-me i moelle 6, is secured by s scew 6* to e member of inverted U-shepe that has projections .8 end 9 and is pivoted at 7. The pojeetions 8 and 9 elernately abut against anpe-silo egges of e, ola-cle am; l0, :is the svfieli lieniile is moved to open and to close fiile svvicli.

A pair of blades' l2 are pivotecl, et 11, eo l'ee freine 5 and nre rigidly connecienl to the erm lo. These lila-cles :we eflap'te vo move inio and oui oi"- engegemen. with the oonec'f, members in 'alle usuel manner.

i tension spring 1,3, with its opposite ends connecting the blecle arm io the handle, as sliovffi, pi'ovidecl enoeerves lio impart tlie :,saiy movementto the lilatles.

with lie switch in onen position as in Fig. 2, lalie handle is moved to elle .rigsma o svviivones,

Sepiember 2e, E32

it will carry with it the upper* enil of the spiing 13, thereby increasing lie lension on suoli spring and elianginglie/ engnlariy o the line of pull exerted on like blade erin. Boeing this movement of the lmnflle, ille piojeciion is brought lio oem against lie blade crm and thus impsiie .initial movement to the blade. The spring lien completes liemovement of the blees lo Closed position.

To open the switch, the movement of parte in the operation just described is le versed. :xml ille projection 9 of *tlee handle is lnouglil To beer against iglie. imperi' positive movemenl to thellafles ami move them ont oi 'frici/ional engagement Wili the Contact memloeis 1.

Various modifications might be made witlioo avoiciing the essential feeuree of the iuveniion. For insizmceE the speling' n'iiglxii be under a constant tension end nee( not necessarily have such tension increased ey movement of the handle; the movement the handle serving simply to change the angolerity" of the spring with respect to the blade erm and to impart positive starting movement to lie blades claim as my invention l. The combination in an electric switch, of a frame, e Contact carrier of U-slmpe pivotally snppored on the frame, an operating lever pivoxilly supported on the frame at a. point above the support for the carrier,-

orzilly supported on said frameet a point above the supportlfor the carrier, spaoeil lugs corrieii :mths exi'freniiiesl of said lever, the lugs ae each extremity being disposed at opposite sides of die cai'ier to effect a lostmotion connection between the lever and the Contact',l carriera end vmeans for yieldingly connecting the lever to the carrier, seid con necting means seing secured o the lever si; a point eccenlido'f its pivotal support.

3. In a switch structure? e frame' of U- los shape. a Contact ycarrier of U-shape pvotally mounted in Said frame, :1n operatlng lever of inverted U-shnpe pivotally mounted adjacent to the open portion of said frame, and between the legs thereof, the legs of said operating lever having means orprovidng a 10st-motion connecqn to Suid contac(y carrier and for drfectly engaging and positively acluatng; the Suhl currlcr.

In testimony whereof, I have hereunto subscribed my nume this 17th kry of September 1920.

HUBERT K.- KRANTZ. 

